Answer with explanation:
Number of second grade students who are considered for sample =1414
Number of words that is being read in a Minute = 9292 words per minute
If number of students will be more than half of 1414, that is if, they can read or their reading rate is more than 9292 words per minute, then we can say that the sample chosen is Appropriate.
⇒Required Probability,that sample of 1414 students can read 9292 words per minute
![=\frac{707+x}{1414} \text{Where }, [1 \leq x\leq 707]](https://tex.z-dn.net/?f=%3D%5Cfrac%7B707%2Bx%7D%7B1414%7D%20%5Ctext%7BWhere%20%7D%2C%20%5B1%20%5Cleq%20x%5Cleq%20707%5D)
65% of 40 = 26(saved)
40-26=14(spent)
26-14=12
=$12
Answer:
26 cm
Step-by-step explanation:
To find the perimeter with the side lengths, you can use this formula: 2(L+W) because it's the measure of the distance around the rectangle. So,
2(8.5+4.5)
2(13)=26
There are 2 short sides x and 1 long side y.
x+x+y=1,800
2x+y=1,800
y=1,800-2x
The area of the rectangle is A=x(1,800-x).
A is a function with variable x. Moreover it is a quadratic (second degree) function.
The graph of the function is a parabola which opens downwards, because the signs of the leading coefficients of the factors, multiply to minus:
(x)(-x)=-x^2.
This means that the highest point of the parabola, is its vertex V(h,k), so the function takes its largest value for x=h.
The roots of A=x(1,800-x) are x=0 and x=1,800, thus the x coordinate of the vertex, must be the midpoint of 0 and 1,800, that is 900.
Answer:
A=x(1,800-x)
largest area is when x=900
Answer:
Graph A.
Step-by-step explanation:
I graphed it out and my graph is below this text.
Have a great day! :D
